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(257152) 2008HD21  ▹ 
SUMMARY
Keplerian elements at epoch
60400.0 MJD
Value 1-σ variation Units
a 3.06099 3.453e-08 au
e 0.092717 6.23e-08
i 6.143 7.065e-06 deg
Ω 138.328 6.502e-05 deg
ω 91.524 7.797e-05 deg
M 356.23 4.894e-05 deg

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Other useful info
Absolute Magnitude (H)    16.4 mag
Slope parameter (G)    0.15 mag
Perihelion 2.7772 au
Aphelion 3.3448 au
Asc. node-Earth separation 2.05641 au
Desc. node-Earth separation 2.01385 au
Earth MOID 1.77581 au
Orbital period 1956.1 days
Date of orbit computation  feb 22 02:45
Observational summary
Optical observations (Discarded) 216 (0)
Radar observations (Discarded) 0 (0)
Arc length 9901.34 days
Unobserved 419 days

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Ephemeris at epoch 60423 MJD
Right Ascension 239.71 deg
Declination -11.0988 deg
V Magnitude 20.64 mag
Solar Elongation 151.67 deg
Galactic Latitude 30.63 deg
Rate 0.142 deg/day
Direction -66.309 deg

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